Antifriction-bearing.



B. c. KETGHUM.

ANTIPRIGTION BEARING.

APPLICATION FILED AUG. 28. 1901.

900,860. Patented 'Oct. 13, 1908.

2 SHEETS-SHEET 1.

';I am. f

To. all ma /await: l

ERNEST c. 'iiii'rcnun, oFBos'r oN, MAssAcnUsE'r'rs I Be it kno wn that 'I',- Enuns'r 0.;KETGHUM,

. This invention relates to anti-in a citizen. of the United-States of-Ame'rica, and a resident of Boston,. in the county of Suffolk and State of Massachusetts'; have invented f certain 'new' and useful Improvef ments in ntifriction-Bearings; of which the. "following 1s aspecification'.

ings'and; particularly to that class of'anti;

-.'friction bearings in which the anti-friction fmembers interposed betweentheracers have otherfsmaller anti-friction members or sepa;

a raters inte posed between every pair of larger members andtit has for its object the produce tion ofsuch afianti-friction bearing which is peovided with revoluble members interposed tween the separators and the outerroller ath," said separators and revolu'blejmemers interposed between them and the outer roller path bein held-in suitableposition rel-" I ative to each 'ot er and the mainanti-friction members by means ofa suitable cage.

The invention consists further in forming the racers offtwo portions between which is interposed an annular rin of yieldable" material adapted totake any sudden shock.

It consists further in certain novel features I I ;of construction and arrangement of-parts i Q T ence to the description of the 1 the claims hereinaftergiven.

lielevation part1 in section ofan anti frictionI bearrng embor yingthe fea'tures of this in vention. Fig. 2 represents a section on line which will be readily understood by referdrawingsand to Of "the drawings Figure 1 2-2 on Fig. 3. Flg.- 3 representsa' section on line 3-3 on Fig. 2, the inner jrace-ring be- .ing shown in elevation." Fig. '4 represents a] section on line 4-4 on Fig.' 2, Fig. 5 reprer sents an elevation of one ofithe parts of the i cagerfor holding ,the an'ti-friction members. Figs; 6"and -7 represent end elevations of the two parts of the inner race-ring. Fig 8 represents a section of a portion of the cage show- 1. I ing the means for securing the two parts together, and Fig. 9 represents an elevation of I the lockingnut for the inner race-ring.

Similar. characters designate like to.

rts throughout the several figures of the raw iin s. I

I n the drawings, 10 represents a part of the outeri'acer whic hasmounted'within it the other part 11 ofsitidracehIthis member havctionbeai Specification oLL fQtters Intent Patented 0ct.f13,-1908. Application 1118a Augm- 23.1901. Serial No. 890,419. a

- ing 'on-its inner circumferential face a roller path 1'2. interposed between the parts 10 springs 13 or similar memand 11 are'spira bers of yieldable mater al which are adapted {to take up any" shock"which may occur between the two parts of the outer racer.

The springs 13-are of suflicient tension and ,are mounted in-suitable grooves m the part 11 of the outer racer in such a manner as to practically lock the two parts 10 and 11- together and prevent one from'revolving relative to the othen Within the outer-racer- 10 11- is an inner racer 15 having a removable collar 16 which is held in ition' to form the roller path 17 by means of the locknut' 18. Interposed between said outer and inner racers are a plurality of anti-friction.

'm'ernbers such as the balls 19 shown in the accompanying drawings, the bear" faces of which'co'ntact with the roller paths 1 res ectively. 1 I

he antii'riction members 19 are separated by other smaller-'intermediatelanti-friction members" 20 which keep the -anti-friction members 19 separate'd so thatthey cannot contact with each otherand thereby cause a of the anti-friction membersan "the separadirection.

I I f Ithas: been found in practice that, when represents an and 17,

'torswhencontacting shall move in the same s0 wearing of the-surfaces thereof; the'separators 20 insuring that'the bearin faces of an anti-friction. bearings are built under this plan and are revolved at very high speeds, great strain comes upon the cage or retain mg the anti-friction'members 20 'inposition intermediate the centers'of, the anti-friction members 19, the centrifugal action being suehas to cause a tendency for said separators 20- to move outwardly ,and causeundue' friction againstthe ca e in which said members are supported. lo obviate this difiioiilty anti-friction members 21 are interposed between the peri hery of the separators 20 and the outer r0 er path 12,.therehy efiectually retaining the separators. 20in their proper relative positions intermediate the centers of the anti-friction members 19.

To' prevent the members 21 from beconiving displaced from a lane radial to theaxis of the bearing passingt ough the center of the separator v 20, rings 22 are {provided on either side of the anti-friction-members 19 and interposed between the outer-and inner "racers; said rings being connected together by suitable headed pins or similar fastening devices 23.

The rings 22 are. provided with suitable pockets for the Separators and the--a'nti-- friction members 19 and 21 which are adapt ed to ret'ain'these various members in proper position relative to each other. These p'ock ets are somewhat larger in diameter than theanti-friction members contained therein so that the anti-friction members will simply be retained in position within the cage formed by the rings 22 secured together by means of the cage 22+ Each plate 24 is chamfered off onits inner face while the outer face of the cage forming a groove in the pins 23 and as a result reduce the bearing surface between the "anti-friction members and the cage to. a minimum. A- plate 24 is secured by means of screws 25 to each face of 22 is similarly chamfered off, the two chamfered portions of the plllate24 and the cage 22 'ch are mounted a plu- I rality of balls 26 which bear upon the periphcry of the innerracer members 15 and 16'. This provides an anti-friction device which sup orts the cage and allows it to move free yupon the periphery of the inner racerace-ring -15.is supported by a cylindrical hub ring 15 and-16 as the anti-friction members 19 are moved about the roller paths 12 and 17 onthe outer and inner race rings. The

27 extending therethrough between theperiphery-jof which and the inner cylindrlcal wall of the member 15 is interposed an annular bushing 28 of yieldable material which permits these parts to yield one upon the other under any sudden shock.- This cylindrical hub 27 is keyed upon the shaft 29 and revolves therewith. The inner wall of the member 15 andthe eripher of the cylindricalhub 27 are eac provi ed with lon i tudinal projections 30 and 31 which bind t e bushing 28 to these members and cause the shaft 29.

whole to move In' the operation of the device as one racering is revolved relatively to the other at a very rapid-speed the tendency will be for the effectual resistance for said outward-movement is the prime ob'ect of the members 21 which are interposed etween the outer roller path 12 and the separators 20, this member emg sufiiciently so id to resist any outward movement of sald separators,

It is obviousthat as the bearing face of the member 21 contacting with the outer. roller ther description.

together about the axis of the path 12 .or the se arators 20 moves in the :same direction as t e faces of these members 110 undue wear-will be caused by the fnc tional contact between the bearing surfaces.- This makes-a very eifective'roller bearing which reduces the friction to a minimum an is sufiiciently solid to be capable for-use in connection with devices revolved at a speed such for instance as turbine engines, while atthe same time the construction is such that there is no danger of a displacement of the various parts of the bearing during its ra id revolution.-

t is believed the operation of the invention will be readily understood withoutfur- Having thus claim: Y Y

1. ha roller bearing, the combination of twg rings movable relatively to each other an walls with paths for anti-friction members; a plurality of anti-friction members interposed betweenfsaid rings and adapted to revolve in contact with said aths a separator and a revoluble member contacting with and interposed between each se arator and the outer roller path, the axes 0 each separator and its cooperating revoluble member being eat described my invention; 1 v

provided on adjacent circumferential between each pair of antiriction members; "j Y radial to the axis of said roller bearing.

a 2. In a rd er bearing, the combinatlon of" two rings. movable relatively to each other and provided on adjacent circumferential walls with paths for anti-friction members;

a plurality of anti-friction members inter posed between said rings and adapted to revolve in contact with said aths a separator between each pair of antiriction members; andjmeans interposed between said separator and the outer roller path and in rolling contact with the latter ada ted to retain saidseparator in osition wit the center of said so arator in me with the centers of the antifriction members between which it is interposed.

' 3. In a roller bearing, the combination of two rings movable relatively to each other and provided on adjacent circumferential walls with paths for anti-friction members; a plurality of antifriction members interposed between said rings and adapted to reouter roller path, the centers of each pair of separators and revoluble members being in a line radial. to the axis of said roller bearing; and means for retaining in pro er relative osition said separators and revo uble memers. 4. In a roller bearing, the combination of two rings movable relatively .to each other and provided on adjacent circumferential Walls with paths for anti-friction members; a plurality of anti-friction members interposed between said rings and adapted to revolve in contact with said paths; a separator between each pair of anti-friction members; a revoluble member interposed between each separator and the outer roller path; and annular members interposed between said rings and at either side of said anti-frictionmembers and pi'oVidcdwit-h means-for retaining in proper relative position said separators and revoluble members. i

5. In a roller bearing, the combination of" two rings movable relativelyto each other and provided on adjacent circumferential walls with paths for anti-friction members; a plurality of anti-friction members interposed between said rings and adapted to revolve in contact with said paths; a separator between each pair'ofanti-friction members;

a rcvolublc member interposed between each separator and the outer roller path; and annular members interposed between said rings and at either side of said anti-friction mem-' bers provided with pockets 'for said separators and revoluble members.

6. In aroller bearing, the combination of' two rings movable relatively to each-other and provided on adjacent circuiiiferential' walls with paths for anti-frictionmembers;

volve in contact with said paths; a separator between each pair of anti-friction members; a revoluble member interposed between each separator and the outer roller path; a cage interposed between said racers andsupporting said anti-friction members and separators and anti-friction members interposed between said cage and the inner ring.

7. In a. roller bearing, the combination of two rings movable relatively to each other and provided on adjacent circumferential walls with paths for ai'iti-friction members; a plurality of anti friction members interposed between said rings and adapted to revolve in contact with said paths; a separator between each pair of anti-friction members; a revoluble member interposed between' each separator and the outer roller path; a cage interposed between said racers and supporting said anti-friction members and separators; plates secured to the outer faces of sa d cage; and anti-fr1ct1on memwalls with paths for anti-friction members; a plurality of anti-frictionmembers interposed between said rings and adapted'to revolve in contact with said paths a separator between each pair of'anti-friction mem- I bers; a revoluble member interposed between each separator and the'outer roller path; a cage inter osed between said racers and supporting said anti-friction members and separators andanti-frictionmembers interposed between said cage and one'of said rings.

9. In a rollerbearing, the combination of two rings movable relatively to each other and provided on adjacent circumferential walls with paths for anti-friction members; a plurality of anti-friction members interposed between said rings and adapted to revolve in contact with said paths; a ball between each air of anti-friction members; and a revolu le member interposed between each ball and the outer roller path, the axes of each ball and its cooperating"revoluble, member being radial to the axis of said roller bearing. i

10. In 'a roller bearing, the combination of two rings movable relatively to eachother and provided on adjacent circumfer- .ential walls with paths for anti-friction members; a plurality of anti-friction members interposed-between said rings and adapted to revolve in contact with said paths; a ballbetween each pair of anti-friction members; and a ball interposed between each ball and the outer roller ath, the axes of each 00- acting pair of ba ls being radial t0 the axis of said roller bearing.

11. In a roller bearing, the combination of two rings movable relatively to each other and provided on adjacent circumferential walls with paths for anti-friction members; a plurality of anti-friction members interposed between said rings and adapted to revolve in contact with-said paths; a separator between each pair of anti-friction members, the center of which is in line with the centers of the anti-friction members between which it is interposed; and a revoluble member interposed between each separator and the outer roller path, the axes of each separator and its cooperating revolublc 7 member being radial to the axis of said roller bearing.

Signed by me at Boston, Mass., this 23d day of August, 1907.

ERNEST C. KETCHUM.

Witnesses:

EDNA C. CLEVELAND, WALTER LOMBARD. 

